Yes. Generally speaking, "tax strategies" are unpatentable per se.
More specifically, the Leahy-Smith America Invents Act (AIA), P ublic Law 112-29, sec. 14, 125 Stat. 284 (September 16, 2011) provides that for purposes of evaluating an invention for novelty and nonobviousness under 35 U.S.C. 102 and 35 U.S.C. 103, any strategy for reducing, avoiding, or deferring tax liability (hereinafter "tax strategy"), whether known or unknown at the time of the invention or application for patent, shall be deemed insufficient to differentiate a claimed invention from the prior art. See MPEP 2104.01.
More specifically, the Leahy-Smith America Invents Act (AIA), P ublic Law 112-29, sec. 14, 125 Stat. 284 (September 16, 2011) provides that for purposes of evaluating an invention for novelty and nonobviousness under 35 U.S.C. 102 and 35 U.S.C. 103, any strategy for reducing, avoiding, or deferring tax liability (hereinafter "tax strategy"), whether known or unknown at the time of the invention or application for patent, shall be deemed insufficient to differentiate a claimed invention from the prior art. See MPEP 2104.01.